O-rings are solid-rubber seals that are shaped like a doughnut and are round in nature. When pressed between two mating surfaces, O-rings block the passage of liquids or gases. O-rings can form a static or dynamic seal. A static seal is where the O-ring does not move and is used simply for containing pressure or maintaining a vacuum. Dynamic seals can be reciprocating (like a piston and cylinder), or rotating (shaft rotating in a housing). Sealmech offers o-rings in a multitude of o-ring materials and durometers ranging from 25 – 90 durometer on the shore A hardness scale. In addition to the standard materials available we also offer o-rings in a variety of materials in specialty grades such as medical grade class VI o-rings, NSF, FDA and 3A sanitary grades.

Buna-N (Nitrile / NBR) | Viton (Fluorocarbon) | Silicone | EPDM / EPR-(Ethylene Propylene) | PTFE | Neoprene | Aflas | Kalrez